Regional totals	Periodo	Total
National Total	2020	5,25
National Total	2019	6,29
National Total	2018	6,62
National Total	2017	7,93
National Total	2016	7,05
National Total	2015	7,41
National Total	2014	8,62
National Total	2013	11,42
National Total	2012	9,55
National Total	2011	8,75
National Total	2010	8,66
National Total	2009	8,2
National Total	2008	6,27